Epidemiologists have more or less proven that the more time you spend outdoors, the less chance of your eyesight worsening.
You need to spend more time where you can see the horizon.
I posted this study twice before on HN. It's a really useful result because it could save u and your loved ones from having to wear glasses.
I posted this study twice before on HN. It's a really useful result because it could save u and your loved ones from having to wear glasses.
http://bjo.bmj.com/content/93/8/997
This is not the only paper citing this finding. Go through the references and you will see more.